UNSPSC 41115310: Optical calibration sets

UNSPSC 41115310 Optical calibration sets is a Commodity code under which state and local governments procure calibration gases, laboratory equipment calibration services, and related optical and measurement instrument certification. Recent activity shows two distinct procurement streams: EPA-protocol calibration and audit gases sold in bulk cylinders for continuous emissions monitoring systems, and ISO 17025-accredited calibration services for forensic laboratory equipment including precision pipettes, micrometers, calipers, and specialized forensic instruments. The Orange County, California Public Works Department and San Mateo County represent the primary recent buyers, both issuing solicitations for ongoing calibration support tied to regulatory compliance and forensic operations. Issuing bodies under this code include county governments operating public utilities and forensic laboratories; school districts and cities appear in the broader opportunity set but not in the recent calibration-focused solicitations reviewed.

Activity concentrates in California, with the Orange County IFB for EPA Protocol Calibration and Audit Gases (due August 10, 2026) and the San Mateo County RFQ for ISO 17025-accredited forensic laboratory equipment calibration (due March 3, 2026) representing the two most substantial recent opportunities. The Orange County contract is a five-year usage agreement with firm fixed pricing covering 13 EPA G1-method gas mixtures—4 calibration grades and 9 audit grades in 144-cubic-foot cylinders—delivered to the Central Utility Facility to support cogeneration CEMS compliance. San Mateo County's three-year RFQ encompasses calibration of forensic laboratory instruments spanning Hamilton automated dispensers, Rainin and Eppendorf pipettes across multiple capacities, Mitutoyo and Starrett micrometers and calipers with precision readability to 0.00005 inches, and specialized gun barrel measuring rods. Both contracts require vendor certification—EPA protocol traceability and NIST reference material availability for Orange County, and ISO 17025 accreditation for San Mateo County. Orange County applies a 5% local and DVBE small-business bid-price preference capped at $100,000; San Mateo County procurement materials do not explicitly identify set-asides in the available documentation.